CNC machines are only as good as the people programming, setting up, and running them. Even if the programming and set-ups are perfect (Which is absolutely not guaranteed in places like China, Turkey), things degrade over time as tools wear. Unless you have automated probing, measuring, tool changing based on preset load parameters, etc, even fully automated setups can go to sh!t if they're not taken care of. Where I'm going with this is that every step in the process matters to quality; you need competent people at all of them to get reliably good parts, which there almost surely won't be in the cut-rate off-shore shops. You can pump out garbage on a CNC faster than conventional methods, lol.
The reason the bigger companies have success with off-shore manufacturing is that they're big enough that they have the resources to actually oversee and control processes there. We will have to wait and see how SAI does, but I can almost guarantee you there will be QC issues. That's the trade-off; cheaper manufacturing costs for lower, or at the very least, inconsistent quality. There's no free lunch, if it were cheaper, guaranteed quality everyone would be doing it. The material used can also be questionable, unless you're supplying it or can trace where it came from. Local manufacturing allows control over ALL of these factors, off-shore manufacturing does not. It's a dice roll; sometimes you get great parts, sometimes you don't, and the recourse options if you don't are much more limited.